7 (8)
EN.33.C.134.1512
Assembly instructions | LK Minishunt M60
Technical data
Article no.
241 80 85
Max. operating pres-
sure
0,6 MPa
Operational tempera-
ture secondary
+12 - +63 ºC
Ambient temperature Max +35 ºC
Circulation pump
Wilo Yonos Para RSB 15/6-RKA
Voltage
1 phase 230 V +10%/-15% 50/60
Hz, PE
Output
Max 45 W
Current
Max 0,44 A
Protection class
IP X4D
Insulation class
F
Valve capacity
Kvs 1,12, with self-acting thermo-
stat Kv 0,51
Flow diagram
Diode indicator on the pump
Diode
Meaning
Note
Action
Lights green
Pump in operation.
Normal operation.
Fast flashing green
Pump is running venting routine
during 10 min. Then, the required
pump capacity must be set.
Venting routine active.
Flashes red/green
The pump is ready for operation,
but will not start. The pump starts
automatically as soon as the error
is no longer present.
Under- or over-voltage
U<160 V, U>253 V.
Check the power supply
>195 V / <253 V.
Flashes red
The pump is not working, pump
blocked.
The pump does not restart
automatically.
Check the pump housing,
if necessary replace the pump.
Diode not lit
No power supply or damaged
electronics.
Check the power connection, cable
connection, if necessary replace
the pump.
Trouble shooting
The under floor heating circuit does not
get warm
• Check that the shut-off valves for (2) and the
return valve (7) are open.
• Check the setting on the maximum limiter
valve (6).
• Check the connection, operation and setting
of the circulation pump.
If the above adjustments have been performed
and there is still no heat reaching the under floor
heating circuit, this can be an indication of low
available drive pressure from the primary side.
Begin by checking that the circulation pump of
the primary side can be stepped up. If this does
not rectify the situation, the circulation pump of
the minishunt can help to ”draw” the water from
the primary side to the under floor heating side
by gradually closing (clockwise) the VF valve (10)
until the correct temperature has been achieved.
Return temperature of the under floor
heating circuit is too low
• Open the return valve (7).
• Increase the speed of the circulation pump
using the function selector.
The radiators after the minishunt do not get
warm for the single pipe radiator systems
The LK Minishunt M60 is supplied in the twin
pipe design. For the single pipe system, switching
will need to be carried out, see heading
Start up/
Adjustment.
SV
P
AV/RV
AV/
RV
Tmax
Primary side
with master
pump
Secondary side
for underfloor
heating
2-1 Switch for single or twin
pipe radiator systems
